Most people when they buy a gun, decide which type of gun/caliber they want and then the scope that will best suit their needs for that gun.
Once that is decided, they will come up with the bases/rings they feel is appropriate for the setup.
And then there is me. Only I hunt for(and manage to find) obsolete scope bases for my favorite make and model pumpgun. Then I look for(and manage to find) the only obsolete rings that will fit these bases; which I think are getting even harder to find than the bases, thank you Labman95.
Then I will watch for an obsolete pumpgun that will suit my needs with these bases/rings and finally a scope(often obsolete also) that will fit this setup for the hunting that I do in the thick northeast.
I'll keep my eye out and see what my local gunshop comes up with on consignment that might fit into this application, LMAO !!!!! They've done pretty well by me in the recent past.